25143397 has 4 divisors (see below), whose sum is σ = 25167616. Its totient is φ = 25119180.

The previous prime is 25143389. The next prime is 25143413. The reversal of 25143397 is 79334152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25143397 - 2³ = 25143389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25143337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10479 + ... + 12652.

It is an arithmetic number, because the mean of its divisors is an integer number (6291904).

Almost surely, 2^25143397 is an apocalyptic number.

It is an amenable number.

25143397 is a deficient number, since it is larger than the sum of its proper divisors (24219).

25143397 is a wasteful number, since it uses less digits than its factorization.

25143397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24218.

The product of its digits is 22680, while the sum is 34.

The square root of 25143397 is about 5014.3191960624. The cubic root of 25143397 is about 292.9597688086.

The spelling of 25143397 in words is "twenty-five million, one hundred forty-three thousand, three hundred ninety-seven".